Ski shoe attachment for skateboards



FIG. 1 is a perspective view of a ski shoe attachment for skateboards showing my new design;

FIG. 2 is a side-elevational view of the side not seen in FIG. 1;

FIG. 3 is a bottom-plan view thereof;

FIG. 4 is a front-elevational view thereof; and

FIG. 5 is a rear-elevational view thereof. 

The ornamental design for a ski shoe attachment for skateboards, as shown. 